Defects in Cast Rods Made of a Near-Eutectic Co Alloy before and after Zone Melting

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING

Russian Metallurgy (Metally) Pub Date : 2025-01-08 DOI:10.1134/S0036029524701027

V. V. Molokanov, A. A. Dubov, A. V. Yamchuk, A. V. Krutilin, N. A. Palii, A. A. Alpatov, O. S. Antonova

引用次数: 0

Abstract

The surface and internal defects of long cast rods made of a near-eutectic 84KKhSR Co alloy using nondestructive testing methods, namely, X-ray computed tomography and metal magnetic memory, and macrostructural and fractographic analyses are analyzed. The main defects in the rods are found to be gas pores and cavities. Zone melting is shown to eliminate these defects. Deep pores and cavities are eliminated during the first remelting, and the second remelting leads to complete elimination of defects and stabilization of geometric dimensions along the rod length.

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近共晶Co合金铸棒在区熔前后的缺陷

采用x射线计算机断层扫描和金属磁记忆等无损检测方法，对近共晶84KKhSR Co合金长铸棒的表面和内部缺陷进行了分析，并对其进行了宏观组织和断口分析。棒材的主要缺陷是气孔和空腔。区域熔炼可以消除这些缺陷。在第一次重熔过程中消除了深孔和空洞，第二次重熔导致缺陷的完全消除和沿杆长几何尺寸的稳定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.